The long-chain ionic liquid 1-hexadecyl-3-methylimidazolium chloride (C16mimCl) was used as atemplate to prepare cerium-doped MCM-48 materials inbasic medium by a hydrothermal synthesis procedure. Theeffect of the amo...The long-chain ionic liquid 1-hexadecyl-3-methylimidazolium chloride (C16mimCl) was used as atemplate to prepare cerium-doped MCM-48 materials inbasic medium by a hydrothermal synthesis procedure. Theeffect of the amount of Ce salt and C16mimCl/Si on thesynthesis were discussed in detail. This mesoporousmaterial exhibits a pore architecture which is cubic Ia3dgyroid and possesses a large surface area and a narrowpore distribution. Cerium in calcined porous frameworkexists in the form of well-dispersed tetrahedral coordination.The C16mimCl shows a high tendency toward selfaggregationthat allows the formation of the ceriumdopedgyroid mesostructure by using the appropriateamount of Ce salt.展开更多
Electrodeposition from a lyotropic liquid crystal template medium was used to produce nanostructured platinum microelectrodes with high specific surface area and high mass transport efficiency. Compared to polished an...Electrodeposition from a lyotropic liquid crystal template medium was used to produce nanostructured platinum microelectrodes with high specific surface area and high mass transport efficiency. Compared to polished and conventional platinized microelectrodes, well-ordered nanostructured platinum microelectrodes exhibited enhanced electrocatalytic properties for oxygen and ascorbic acid, whilst well-ordered nanostructured platinum microelectrodes offered improved electrocatalytic properties for oxygen reduction compared to disordered nanostructured platinum microelectrodes.展开更多
基金the Natural Science Foundation of Yunnan Province/China(Grant No.2003E0005Z).
文摘The long-chain ionic liquid 1-hexadecyl-3-methylimidazolium chloride (C16mimCl) was used as atemplate to prepare cerium-doped MCM-48 materials inbasic medium by a hydrothermal synthesis procedure. Theeffect of the amount of Ce salt and C16mimCl/Si on thesynthesis were discussed in detail. This mesoporousmaterial exhibits a pore architecture which is cubic Ia3dgyroid and possesses a large surface area and a narrowpore distribution. Cerium in calcined porous frameworkexists in the form of well-dispersed tetrahedral coordination.The C16mimCl shows a high tendency toward selfaggregationthat allows the formation of the ceriumdopedgyroid mesostructure by using the appropriateamount of Ce salt.
文摘Electrodeposition from a lyotropic liquid crystal template medium was used to produce nanostructured platinum microelectrodes with high specific surface area and high mass transport efficiency. Compared to polished and conventional platinized microelectrodes, well-ordered nanostructured platinum microelectrodes exhibited enhanced electrocatalytic properties for oxygen and ascorbic acid, whilst well-ordered nanostructured platinum microelectrodes offered improved electrocatalytic properties for oxygen reduction compared to disordered nanostructured platinum microelectrodes.
